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R. B. DISBROW.

VALVE MECHANISM FOR MILKING APPARATUS.

APPLICATION FILED OCT. 6. I9.

Patented July 1, 1919.

WITNESSES.

TIIB COLUMBIA PLANDGRAPH c0-. WAsHlNn'mN. D. c.

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UNITE sTATE PATENT OFFICE REUBEN B...n11smo,w, fi strcqrnun,.ivrinnnsorn.[

vitv i msa Fen ivr niciirenrienarus. I i

0 all whom it mayconcern Be it known that I, Rece s B! miseaow,

a citizen of the United States, residing at St. Paul, in the county of BamseyandGtate of Minnesota, have inventedeertain new and useful Improvements in Valve Mechanism for Milkingripparatus; and l do hereby will enable others skilled in the art to which it appertains to make and use the same.

My present invention relates to milking apparatus, and has for its objectto provide an extremely simple, efiicient and sanitary valve device for the vacuum chamber or milk delivery compartment of the milking apparatus. a

The mllking apparatus, in so far as 1t is shown in the accompanylng drawings, is of a type disclosed in my pending application Fig. 3 is a transverse section on the line 33 of Fig. 2.

In this type of milking apparatus, the vacuum chamber and valves cooperating therewith are applied directly on the cover, and the teat-cups are connected to the socalled vacuum chamber by flexible tubes. Partial vacuum is produced in the so-called vacuum chamber, by a pulsating device, preferably consisting of cooperating cylinders and pistons that alternatively produce partial vacuum and air pressure in the respective so-called vacuum chambers.

The can cover 4 affords the base for the upright vacuum chamber 5, the walls of which are shown as cast integral therewith. These vacuum chambers 7 at their lower, portions have lateral sleeve-like extensions 6 that open into an intermediate milk receiv-' ing chamber 8, the bottom of which is open: an that the will be discharged directly 5, Specification ofLetters Patent. j Pat itd J ilyi, fiiiplicatimimwOctober6,1917i? jsa-a11va1ss,1aw i top,but*this feature constitutes no pa 'totf the present invention; a

- Normally the delivery endsof the sleeves p p (i are closed by check valves ofthe flapper declare the following to be a full, clear, and; exact description of the invention, such type, jalid "which valves constitute the an important feature of the present invention.

Each such valveis made in the form of a slightly flexible rubber plate 10, having at its upper edge a head 11. This head 11 is formed with an undercut laterally offset edge, or shoulder 12, which affords a fulcrum support for the valve when applied.

Preferably, also, on its opposite face the valve 10 is formed with a second and less important shoulder 13 which stands materially above the shoulder 12. The top plate of the chamber 8 is formed with slots 14, through which the valvesv 10 may be freely dropped or inserted into working positions,

as shown in the drawings. Here it is important to note. (see particularly Fig. 2),

that when these valves are in working position they are supported on their fulcrum edges 12, and which fulcrum edges are offset from the valveacting faces, so that the said valves under the action of gravity will be normally held against the edges of the 00- operating sleeves 6.

Obviously, when partial vacuum is probluced in one of the chambers 5, thevalve 10, which is already seated, will simply be more tightly seated against the sleeve 6, but when. air pressure is produced in said chamber. 5, the said valve 10 will freely swing into open position, so as to permit a delivery of the milk from the vacuum chamloer into the so-called milk delivery chamber.

A valve of the above character, while :cient, does not require any fine construction 1n the valveor seat, and, moreover, may be easily" removed, Washed, sterilized and replaced. TheShOUlClGI 13, which isalways above the top of the supportingplate, gives a good grip to the fingers in lifting the [valvefrom position.

The numeral 15 indicates tubes leading ffrom the upper portions of the vacuum chamber 5', and which, in practice, will be cpnnected tothe pulsator, or means for proeasing" variable pressure.

The numeral 16 indicates valve'eqiripped 7 tubes leading to the sides of the vacuum therefor, and supporting thesamegravity V seated against the face of saidiport, the

said valve being readily. removable.

2, A caslng havlng .a port withan approximately vertical face, and a plate above said port, said eplate having a vertiealslot opies; isgpa ent my 158 abtaine o in approximate alinement with the face of said port, and a valve in theform of a flat plate insertible through said slot; and having an oflset ledge serving as a fulcrum therefor; and-supporting the smile gravity seated against the face of said port, the said valve being readily removable and being of a slightly flexible material and having a head located above said splate and provided with an offset, portion adapting it to be readily engaged by the fingers.

In testimony whereof I aflix my signature in presence of tWo witnesses.

REUBEN-B. I J I SBROVV. Witnesses:

CLARA Dnlsranns'r,

BERNICE G. BA ANN.

Jfive cents each, by addressing theFCommissioner of Patents Wa h n n, 0-, 

